RACI is an acronym that stands for Responsible, Accountable, Consulted, and Informed. It is a project management tool used to clarify the roles and responsibilities of individuals or teams involved in a project or task.

• Responsible: the person or team responsible for completing the task.
• Accountable: the person who is ultimately accountable for the task's success or failure.
• Consulted: individuals or teams who are consulted for their expertise or input on the task.
• Informed: individuals or teams who need to be kept informed about the task's progress or completion.

By clearly defining and assigning each role in a RACI matrix, it helps to avoid confusion, duplication of efforts, and helps ensure that everyone involved in the project is aware of their responsibilities and contributions.